Air concentrations of PCBs and metals at Crab Orchard National Wildlife Refuge /

"May 1995"--Cover.

Assessment of created wetland performance in Illinois /

Wetlands are extremely valuable natural features that have decreased significantly in number over time in Illinois and the United States ... Their important functions include flood protection, water conservation in times of drought, groundwater recharge, improvement of water quality through sediment reduction and contaminant removal, and providing habitat for native animals and plants, including many sensitive and state-listed threatened and endangered species ... Due to a federal "no net loss" policy on wetlands adopted through executive order by President George H. Bush in 1990, as well as a prevailing heightened interest in conservation in general, there is currently considerable interest in the restoration and creation of wetlands. Both Section-404 of the Clean Water Act of 1972 and the Swampbuster Provision of the Food Securities Act of 1985 require compensation or mitigation for the loss of wetlands. A number of federal and state programs such as Section 319 of the Clean Water Act and the Conservation Reserve Program within the Natural Resources Conservation Service (NRCS) encourage wetland restoration and creation. In addition, various conservation organizations, such as The Nature Conservancy and Ducks Unlimited are very active in wetland restoration. Despite wetland restoration efforts and the national goal of no net loss, wetlands and wetland functions continue to be lost due to degradation of existing wetlands ... Unfortunately, no reliable information exists on the quality of existing wetlands or on trends in wetland quality over time ... The functional quality of existing wetlands is likely decreasing in many areas due to the combined effects of habitat fragmentation, alteration of hydrology, invasive species, and continued input of nutrients and pollutants. Furthermore, it is still debatable whether created or restored wetlands can adequately replace the suite of ecological functions provided by natural wetlands ... and the failure of many wetland compensation projects contributes to a continued national net loss of wetland functions ... The need for post-construction site monitoring and assessment of created and restored wetlands to evaluate functional success is widely recognized. ... At this time, there is little agreement on how to assess the success on quality of wetland restorations or creations.

Coal blending in Illinois /

Project conducted by Energy and Environmental Systems Division of Argonne National Laboratory.

Concrete bridge deck overlays in Illinois : mix design experimentation and investigation of construction methods /

"IL-PRR-133"--Technical report documentation page.

Design, construction, and analysis of CRCP patching techniques in Illinois /

"March 1998."

Downstate Illinois Amtrak getaways : special Amtrak lodging and car rental packages.

"All tours effective until May 31, 2001, unless otherwise noted."--P. [4] of cover.

Ecotoxicological evaluation of area 9 landfill at Crab Orchard National Wildlife Refuge : biological impact and residues /

"HWRIC RR-062."

Evaluation of methodology for determining truck vehicle miles traveled in Illinois /

"July 2002."

Evaluation of episodic and seasonal emission control for transportation in Illinois /

"January 2002."

Evaluation of mechanized consolidation of bridge deck concrete in Illinois /

"August 17, 1999."

Fiberglass reinforced polymer composite bridge deck construction in Illinois /

"Report no. FHWA/IL/PRR-145"--Technical rept. documentation p.

Growing older in Illinois : needs, challenges, opportunities.

"This report was written by the Heartland Center on Aging, Disability and Long Term Care, School of Public and Environmental Affairs, Indiana University and the National Center for Senior Living, South Bend, Indiana. May, 1991." Acknowledgements.

Illinois agricultural statistics /

Latest issue consulted: 2004.

Illinois as a leader in the international economy : an analysis of the challenges of the 1990s /

Executive summary -- Overview of findings -- Some summary conclusions -- Purpose -- A changing national and international marketplace -- Cluster dynamics in the Illinois economy: defining key industry clusters -- The cost of doing business in Illinois -- Occupational structure: the key to success in the 1990s is retaining and attracting high value-added jobs in Illinois -- Regional differences: while northeastern Illinois dominates the economy, many of the state's key clusters are widely dispersed around the state -- Summary and conclusions -- appendix 1. Illinois' industry cluster performance: detailed analysis -- appendix 2. Illinois' occupational challenges in the 1990s by industry cluster.

Illinois annual air quality report.

Mode of access: Internet.